:root{--bg:#f6f4ff;--surface:#ffffff;--surface2:#eee8ff;--ink:#17132b;--muted:#6d6684;--line:#ddd7f2;--accent:#6d4aff;--accent2:#b15cff;--dark:#17122b;--radius:32px;--shadow:0 26px 78px rgba(88,70,170,.15)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 10% 0,rgba(177,92,255,.18),transparent 36%),radial-gradient(circle at 90% 10%,rgba(109,74,255,.13),transparent 34%),var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.72;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit}img{display:block;max-width:100%;height:auto}button,input,select,textarea{font:inherit}.container{width:min(1220px,calc(100% - 44px));margin:auto}.topbar{position:sticky;top:0;z-index:90;background:rgba(246,244,255,.84);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.nav-wrap{height:78px;display:grid;grid-template-columns:330px 1fr 250px 0;gap:18px;align-items:center}.brand{display:flex;align-items:center;gap:12px}.brand img{width:42px;height:42px;border-radius:15px;background:#fff;padding:4px}.brand strong{display:block;font-size:16px;line-height:1.2}.brand em{display:block;color:var(--muted);font-size:11px;font-style:normal}.nav{display:flex;justify-content:center;gap:17px}.nav a{font-size:14px;font-weight:900;color:var(--muted);white-space:nowrap}.nav a:hover{color:var(--accent)}.nav-actions{display:flex;justify-content:flex-end;gap:10px}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;border:1px solid transparent;padding:12px 18px;font-weight:950;cursor:pointer;transition:.2s ease;min-height:46px}.btn:hover{transform:translateY(-1px)}.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;box-shadow:0 14px 30px rgba(109,74,255,.22)}.btn.dark{background:var(--dark);color:#fff}.btn.outline{background:#fff;border-color:var(--line);color:var(--ink)}.menu-toggle{display:none;border:0;background:transparent;flex-direction:column;gap:5px;justify-self:end}.menu-toggle span{width:24px;height:2px;background:var(--ink);border-radius:999px}.eyebrow{display:inline-flex;color:var(--accent);font-size:12px;font-weight:950;letter-spacing:.18em;text-transform:uppercase}.hero{display:grid;grid-template-columns:.98fr 1.02fr;gap:44px;align-items:center;padding:76px 0 42px}.hero-copy h1,.story h2,.section h2,.support-copy h2,.contact-panel h2{font-size:clamp(36px,4.7vw,68px);line-height:1.02;letter-spacing:-.055em;margin:14px 0 16px;text-wrap:balance}.hero-copy p,.story p,.section-head p,.support-copy p,.contact-panel p,.download-card p,.verify-card p{color:var(--muted);margin:0;font-size:17px;line-height:1.84}.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0}.hero-tags a{border:1px solid 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span{color:var(--accent);font-size:12px;font-weight:950;letter-spacing:.12em}.entry-strip b{display:block;font-size:20px;margin:6px 0}.entry-strip em{font-style:normal;color:var(--muted);font-size:13px}.story{display:grid;grid-template-columns:.82fr 1.18fr;gap:36px;align-items:start;padding:78px 0 24px}.story h2{font-size:clamp(34px,3.8vw,56px)}.story-text{display:grid;gap:14px}.section{padding:80px 0}.section-head{max-width:960px;margin-bottom:28px}.split-head{display:grid;grid-template-columns:.88fr 1.12fr;gap:30px;align-items:start;max-width:none}.section h2{font-size:clamp(32px,3.6vw,50px)}.model-strip{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-bottom:20px}.model-strip article{min-height:150px}.model-strip b{display:block;font-size:18px;margin:7px 0}.model-strip p{color:var(--muted);font-size:14px;margin:0}.product-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.product-card{display:grid;grid-template-columns:220px 1fr;gap:22px;padding:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);border-radius:32px;align-items:stretch;transition:.22s ease}.product-card:hover{transform:translateY(-4px)}.product-wide{grid-column:1/-1;grid-template-columns:300px 1fr}.product-media{background:linear-gradient(180deg,var(--surface2),#fff);border:1px solid var(--line);border-radius:24px;padding:20px;display:grid;place-items:center;min-height:260px}.product-media img{width:100%;height:220px;object-fit:contain}.product-wide .product-media img{height:240px}.product-content{display:flex;flex-direction:column}.product-content span{color:var(--accent);font-size:12px;letter-spacing:.16em;font-weight:950;text-transform:uppercase}.product-content h3{font-size:25px;line-height:1.18;margin:8px 0 10px}.product-content p{color:var(--muted);margin:0 0 14px;font-size:15px}.specs{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:4px 0 18px}.specs b{border:1px solid 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small{color:var(--muted)}.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.article-grid h3{font-size:23px;line-height:1.18;margin:8px 0 10px}.article-grid p{margin:0;color:var(--muted)}.faq-list{display:grid;gap:12px}.faq-list summary{font-size:20px;font-weight:950;cursor:pointer;list-style:none}.faq-list p{margin:12px 0 0;color:var(--muted)}.contact-panel{display:grid;grid-template-columns:1.05fr .95fr;gap:20px;align-items:center}.contact-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.qr-preview{border:1px dashed var(--accent);border-radius:24px;background:var(--surface2);padding:20px;display:grid;place-items:center;gap:16px}.qr-preview img{max-width:300px;border-radius:20px;background:#fff}.footer{background:var(--dark);color:#fff;padding:40px 0 86px}.footer-grid{display:flex;justify-content:space-between;gap:28px}.footer-brand{display:flex;gap:14px;align-items:flex-start;max-width:760px}.footer-brand img{border-radius:14px;background:#fff}.footer strong{font-size:21px}.footer p{color:rgba(255,255,255,.72);margin:8px 0 0}.footer-links{display:flex;flex-direction:column;align-items:flex-end;gap:8px}.footer-btn{border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.08);color:#fff;border-radius:999px;padding:10px 14px;font-weight:900;cursor:pointer}.contact-modal{display:none;position:fixed;inset:0;z-index:1000;align-items:center;justify-content:center}.contact-modal.open{display:flex}.modal-mask{position:absolute;inset:0;background:rgba(0,0,0,.72)}.modal-card{position:relative;z-index:2;width:min(430px,calc(100% - 28px));background:#fff;border-radius:30px;padding:28px;text-align:center;color:var(--ink)}.modal-close{position:absolute;right:16px;top:10px;border:0;background:transparent;font-size:30px;cursor:pointer;color:var(--ink)}.modal-card span{font-size:12px;letter-spacing:.16em;color:var(--accent);font-weight:950}.modal-card h2{font-size:30px;line-height:1.14;margin:8px 0}.modal-card p{color:var(--muted);margin:0 0 16px}.qr-box{border:1px solid var(--line);border-radius:22px;padding:10px;background:#fff}.qr-box img{width:100%;aspect-ratio:1/1;object-fit:contain;border-radius:14px}.modal-links{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:16px}.modal-links a{padding:10px 14px;border-radius:999px;background:var(--surface2)}.floating-contact{position:fixed;right:18px;bottom:18px;z-index:100;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;border:0;border-radius:999px;padding:14px 18px;font-weight:900;cursor:pointer}.lock{overflow:hidden}
@media(max-width:1180px){.nav-wrap{grid-template-columns:1fr 44px}.nav,.nav-actions{display:none}.menu-toggle{display:flex}.nav.open{display:flex!important;position:absolute;top:72px;left:12px;right:12px;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:var(--shadow);align-items:flex-start;z-index:999}.nav.open a{font-size:16px}.hero,.story,.split-head,.split-service,.support-grid,.contact-panel{grid-template-columns:1fr}.entry-strip,.product-grid,.article-grid{grid-template-columns:1fr 1fr}.model-strip{grid-template-columns:repeat(3,1fr)}.product-wide{grid-column:auto;grid-template-columns:220px 1fr}.compare-row{grid-template-columns:1fr 1fr}.compare-row.head{display:none}.footer-grid{flex-direction:column}.footer-links{align-items:flex-start}.main-card{width:42%;height:54%}}
@media(max-width:760px){.container{width:min(100%,calc(100% - 24px))}.nav-wrap{height:72px}.brand strong{font-size:15px}.brand em{display:none}.hero,.section{padding:48px 0}.hero-copy h1,.story h2,.section h2,.support-copy h2,.contact-panel h2{font-size:31px;line-height:1.12;letter-spacing:-.035em}.hero-copy p,.story p,.section-head p,.support-copy p,.contact-panel p,.download-card p,.verify-card p{font-size:15px;line-height:1.78}.hero-actions,.hero-actions .btn,.product-content .btn,.buy-guide .btn,.support-form .btn,.contact-actions .btn,.qr-preview .btn{width:100%}.hero-visual{min-height:360px;border-radius:24px}.visual-note{left:14px;right:14px;top:14px;display:grid}.main-card{width:54%;height:45%;top:88px}.sub-card{width:24%;height:22%}.sub-card.one{right:16px;top:88px}.sub-card.two{left:18px;bottom:34px}.sub-card.three{right:22px;bottom:28px}.entry-strip,.product-grid,.article-grid,.model-strip{grid-template-columns:1fr}.entry-strip a,.model-strip article,.article-grid article,.download-card,.verify-card,.support-form,.contact-panel{padding:18px;border-radius:24px}.product-card,.product-wide{grid-template-columns:1fr;padding:16px;border-radius:24px;gap:16px}.product-media{min-height:220px}.product-media img,.product-wide .product-media img{height:190px;max-width:94%;margin:auto}.product-content h3{font-size:22px}.specs,.guide-steps,.verify-points{grid-template-columns:1fr}.buy-guide{padding:18px;border-radius:24px}.compare-row{grid-template-columns:1fr;gap:6px;padding:15px}.compare-row span:not(:first-child){border-top:1px solid rgba(0,0,0,.06);padding-top:8px}.support-tags{gap:8px}.faq-list summary{font-size:18px}.qr-preview img{max-width:280px}.footer{padding:32px 0 86px}.footer-brand{flex-direction:column}.footer strong{font-size:19px}.footer p{font-size:13px;line-height:1.7;word-break:break-word}.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:8px;width:100%}.footer-links a,.footer-btn{text-align:center;border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:9px 10px}.floating-contact{left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));width:calc(100% - 24px)}.modal-card{width:min(390px,100%);padding:22px 16px}}


/* ===== Screenshot section polish: intro + product heading ===== */
.intro-panel{margin-top:34px;margin-bottom:48px;padding:26px;border:1px solid rgba(109,74,255,.16);border-radius:36px;background:linear-gradient(135deg,rgba(255,255,255,.78),rgba(238,232,255,.72));box-shadow:0 24px 70px rgba(88,70,170,.12);display:grid;grid-template-columns:.72fr 1.28fr;gap:24px;align-items:stretch}
.intro-title-card{border-radius:28px;background:linear-gradient(135deg,var(--dark),#3b2878);color:#fff;padding:30px;display:flex;flex-direction:column;justify-content:space-between;min-height:260px;position:relative;overflow:hidden}
.intro-title-card:after{content:"";position:absolute;right:-44px;bottom:-46px;width:170px;height:170px;border-radius:50%;background:rgba(255,255,255,.09)}
.intro-title-card .eyebrow{color:#bfaeff;position:relative;z-index:1}.intro-title-card h2{font-size:clamp(34px,4vw,56px);line-height:1.05;letter-spacing:-.045em;margin:14px 0 12px;position:relative;z-index:1}.intro-title-card p{color:rgba(255,255,255,.72);font-size:15px;line-height:1.75;position:relative;z-index:1;max-width:24em}.intro-content-card{display:grid;gap:16px;align-content:center}.intro-copy-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.intro-copy-grid article{border:1px solid var(--line);border-radius:24px;background:#fff;padding:22px;box-shadow:0 14px 34px rgba(88,70,170,.07)}.intro-copy-grid b{display:block;font-size:20px;line-height:1.25;margin-bottom:8px;color:var(--ink)}.intro-copy-grid p{font-size:15px;line-height:1.85;color:var(--muted);margin:0}.intro-keywords{display:flex;flex-wrap:wrap;gap:9px}.intro-keywords span{border:1px solid rgba(109,74,255,.18);background:#fff;border-radius:999px;color:var(--accent);font-size:13px;font-weight:900;padding:8px 12px}
.product-head-panel{margin-bottom:24px;padding:24px;border:1px solid rgba(109,74,255,.16);border-radius:36px;background:linear-gradient(135deg,#fff,rgba(238,232,255,.78));box-shadow:0 24px 70px rgba(88,70,170,.12);grid-template-columns:.78fr 1.22fr;align-items:stretch}.product-title-card{border-radius:28px;background:#fff;padding:28px;border:1px solid var(--line);display:grid;align-content:center;min-height:230px}.product-title-card h2{font-size:clamp(32px,3.7vw,50px);line-height:1.05;letter-spacing:-.045em;margin:12px 0}.product-title-card p{margin:0;color:var(--accent);font-size:15px;font-weight:950;letter-spacing:.04em}.product-head-content{padding:8px 4px;display:flex;flex-direction:column;justify-content:center;gap:18px}.product-head-content p{font-size:16px;line-height:1.9;color:var(--muted);margin:0}.product-head-points{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.product-head-points span{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 12px;text-align:center;font-weight:950;color:var(--ink);box-shadow:0 12px 28px rgba(88,70,170,.06)}
@media(max-width:1180px){.intro-panel,.product-head-panel{grid-template-columns:1fr}.intro-title-card{min-height:220px}.intro-copy-grid{grid-template-columns:1fr 1fr}.product-title-card{min-height:auto}.product-head-points{grid-template-columns:repeat(3,1fr)}}
@media(max-width:760px){.intro-panel,.product-head-panel{padding:16px;border-radius:26px;gap:14px;margin-top:22px;margin-bottom:34px}.intro-title-card,.product-title-card{border-radius:22px;padding:22px;min-height:auto}.intro-title-card h2,.product-title-card h2{font-size:30px;line-height:1.12}.intro-copy-grid,.product-head-points{grid-template-columns:1fr}.intro-copy-grid article{padding:18px;border-radius:20px}.intro-copy-grid b{font-size:18px}.intro-copy-grid p,.product-head-content p{font-size:14px;line-height:1.76}.intro-keywords span{font-size:12px;padding:7px 10px}.product-head-content{padding:0}.product-head-points span{text-align:left;padding:12px 14px}.section-head.product-head-panel{margin-bottom:18px}}

/* contact beautify */
.contact-panel{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:stretch;background:transparent;border:none;box-shadow:none;padding:0}
.contact-copy,.qr-preview{background:#fff;border:1px solid var(--line);border-radius:32px;box-shadow:var(--shadow)}
.contact-copy{padding:34px 34px 30px;display:flex;flex-direction:column;justify-content:center;min-height:100%}
.contact-copy h2{font-size:clamp(38px,4.8vw,62px);line-height:1.04;letter-spacing:-.05em;margin:12px 0 16px;text-wrap:balance}
.contact-copy p{font-size:16px;line-height:1.9;max-width:39ch}
.contact-tags{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 0}
.contact-tags span{display:inline-flex;align-items:center;justify-content:center;padding:9px 14px;border-radius:999px;background:var(--surface2);border:1px solid var(--line);font-size:13px;font-weight:900;color:var(--accent)}
.contact-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.contact-actions .btn{min-width:150px}
.contact-tip{margin-top:18px;padding:14px 16px;border-radius:18px;background:linear-gradient(135deg,rgba(109,74,255,.08),rgba(177,92,255,.06));border:1px solid rgba(109,74,255,.14);color:var(--muted);font-size:14px;line-height:1.78}
.qr-preview{padding:26px;display:grid;place-items:center;background:linear-gradient(180deg,#f7f3ff,#f1ebff)}
.qr-shell{width:min(100%,470px);padding:22px;border:1px dashed var(--accent);border-radius:28px;background:rgba(255,255,255,.48);display:grid;justify-items:center;gap:16px}
.qr-title{font-size:14px;font-weight:900;letter-spacing:.12em;color:var(--accent);text-transform:uppercase}
.qr-preview img{max-width:300px;width:100%;padding:12px;background:#fff;border-radius:24px;box-shadow:0 14px 30px rgba(109,74,255,.10)}
.qr-shell .btn{min-width:180px}
@media(max-width:1180px){.contact-panel{grid-template-columns:1fr}.contact-copy,.qr-preview{border-radius:28px}}
@media(max-width:760px){.contact-panel{gap:16px}.contact-copy,.qr-preview{border-radius:24px}.contact-copy{padding:20px}.contact-copy h2{font-size:32px;line-height:1.08}.contact-copy p{font-size:15px;max-width:none}.contact-tags{gap:8px}.contact-tags span{font-size:12px;padding:8px 12px}.contact-actions .btn{width:100%;min-width:0}.contact-tip{margin-top:14px;padding:12px 14px;font-size:13px}.qr-preview{padding:16px}.qr-shell{width:100%;padding:16px;border-radius:22px}.qr-preview img{max-width:280px;padding:10px;border-radius:20px}.qr-shell .btn{width:100%;min-width:0}}